Muffler



W. T. SMITH Jan.

Patented Jan. 18, 1927.

WESLEY THOMAS SMITH, 0F RANGER, TEXAS.

MUFFLER.

Application led March 16,'1925.

The invention relates to inulllers for internal combustion engines, preferably ol? the stationary type, and has for its object to provide a device of this character which will 6 eliminate back pressure in the engine, produce a silent exhaust, prevent back pressure, and consequently reduce the fouling of the spark plugs to a minimum, as well as the vwear on the pistons and piston ring, and at 1t? the same time produces enough heat in the muliler to dry all moisture in the exhaust gases if water is allowed to get in the cylkinder.

A further object is to provide an exhaust muliler for stationary internal combustion engines, which mutller is vertically disposed, and comprises a chambered casing preferably embedded in the ground. and connected to the engine exhaust pipe. The chambered casing .is provided with an upwardly extending cylindrical casing having a plurality of compartments therein formed by horizontally disposed partitions, which partitions are provided with a plurality of registering gas passages o the same diameter as the interior diameter of the exhaust pipe, therebv preventing a choking action oi the gases without back pressure thereon, and allowing the gases to expand in the various chambers in its passage through the mufller.

A lfurther object is to provide the upper end of the casing with a reduced angularly disposed pipe having an interior diameter substantiallyv the same as the gas passages through the partitions, and which angularly disposed pipe discharges the gases into the atmosphere after they have passed through the various expansion chambers.

Tith the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set .fortlnshown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit ot the invention,

In ythe drawing Figure l is a side elevation ot' the muffler.

Figure 2 is a vertical longitudinal sectional view through the muiller.

Referring to the drawing, the numeral l designates exhaust pipe of an internal combustion engine of a stationary type, and 51 which exhaust pipe is preferably imbedded in the ground 2, and has its end provided (ETS Serial No. 15,835.

with a ilange 3, which is secured to the flange l ot' the horizontally disposed pipe The pipe is carried by a. vertically disposed casing G having a gas expansion Achamber 7 therein, and Vinto which gas is discharged from the exhaust pipe and allowed to expand, without creating a back pressure on the engine. Extending vertically 'from the upper end of the cylindrical casing 2 is a reduced cylindrical casing 8, and which casing t is divided into a plurality or expansion chambers 9 by means of horizontally disposed partitions 10 having gas passages 1l therethrough. Therefore it will be seen that the gases in passing through the mutller expand many times before passing therethrough. Consequently the noise of the explosions is muliled. Gas passages 1l are of the saine diameter as the interior diameter of the exhaust pipe l, and the horizontally disposed pipe 5. Therefore it will be seen that a choking operation will not take place which causes back pressure in the engine, and which choking action causes the formation of carbon and fouling of the spark plugs as well as considerable wear on the pistons and piston rings, all of which di'liculties are obviated by the present device. The muffler produces suificient heat therein to dry all moisture in the exhaust gases il water is allowed to get in cylinders of the engine. Therefore water will not be discharged from the device. The upper end of the casing 8 is provided with an angular-ly disposed discharge pipe l2, the inner diameter of which is substantially the saine as the upper gas passage ll. Therefore it will be seen that after the final expansion of the gases, it will not be restricted and will be discharged to the atmosphere angularly. It will be noted that the pipe 12 by being angularly disposed prevents entrance oi? water into the inuilier when raining. Therefore the danger of water entering the engine through the exhaust pipe is obviated and at the same time the end of' the muiiler as a whole is disposed substantial distance above the ground 2 where injury to a` person incident to the discharge ot' the gases will be obviated, as the device is preferably in the neighborhood of seven feet high.

From the above it will be seen that a inuliler is provided for internal combustion engines, which is simple in construction, ositive in operation and one which may e cheaply manufactured and sold.

lll)

The invention having been set` forth what is claimed as new and useful is:-

A muler for internal combustion engines, said inutler comprising' a cylindrical easing verticallyv disposed and adapted to be imbedded in the ground, a right-angularly disposed intake pipe Carried by said Cylindrical Casing` a reduced i'eiticall;v disposed casing ai'iied by the upper end of the c ilindiical Casing'` said verticallv disposed casing being divided into a plui'alit5v of expansion Chanibers by means of horizontally disposed partitions having gas passages therethrough and a discharge pipe carried by the upper end of the vertically disposed easing and of 15 `In testimony whereof I have signed my 20 name to this specification.

WESLEY THOMAS lvli'i` 

